Standard Test Methods for Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys
4.1 These test methods for the chemical analysis of metals and alloys are primarily intended as referee methods to test such materials for compliance with compositional specifications, particularly those under the jurisdiction of ASTM Committee A1 on Steel, Stainless Steel, and Related Alloys. It is assumed that all who use these test methods will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E882.
1.1 These test methods cover the chemical analysis of stainless, heat-resisting, maraging, and other similar chromium-nickel-iron alloys having chemical compositions within the following limits:
Composition Range, %
1.2 The test methods in this standard are contained in the sections indicated below:
Aluminum, Total, by the 8-Quinolinol Gravimetric Method (0.20 % to 7.00 %)
Aluminum, Total, by the 8-Quinolinol Spectrophotometric Method (0.003 % to 0.20 %)
Carbon, Total, by the Combustion–Thermal Conductivity Method
Carbon, Total, by the Combustion Gravimetric Method (0.05 % to 1.50 %)
Chromium by the Atomic Absorption Method (0.006 % to 1.00 %)
Chromium by the Peroxydisulfate Oxidation–Titration Method (0.10 % to 35.00 %)
Chromium by the Peroxydisulfate-Oxidation Titrimetric Method
Cobalt by the Ion-Exchange–Potentiometric Titration Method (2 % to 15 %)
Cobalt by the Nitroso-R-Salt Spectrophotometric Method (0.01 % to 5.0 %)
Copper by the Neocuproine Spectrophotometric Method (0.01 % to 5.00) %)
Copper by the Sulfide Precipitation-Electrodeposition Gravimetric Method (0.01 % to 5.00 %)
Lead by the Ion-Exchange-Atomic Absorption Method (0.001 % to 0.50 %)
Manganese by the Periodate Spectrophotometric Method (0.01 % to 5.00 %)
Molybdenum by the Ion Exchange–8-Hydroxyquinoline Gravimetric Method
Molybdenum by the Spectrophotometric Method (0.01 % to 1.50 %)
Nickel by the Dimethylglyoxime Gravimetric Method (0.1 % to 48.0 %)
Phosphorus by the Alkalimetric Method (0.02 % to 0.35 %)
Phosphorus by the Molybdenum Blue Spectrophotometric Method (0.002 % to 0.35 %)
Silicon by the Gravimetric Method (0.05 % to 4.00 %)
Sulfur by the Gravimetric Method
Sulfur by the Combustion-Iodate Titration Method (0.005 % to 0.5 %)
Sulfur by the Chromatographic Gravimetric Method
Tin by the Solvent Extraction–Atomic Absorption Method (0.002 % to 0.10 %)
Tin by the Sulfide-Iodometric Titration Method (0.01 % to 0.05 %)
Titanium, Total, by the Diantipyrylmethane Spectrophotometric Method (0.01 % to 0.35 %)
Vanadium by the Atomic Absorption Method (0.006 % to 0.15 %)
1.3 Test methods for the determination of carbon and sulfur not included in this standard can be found in Test Methods E1019.
1.4 Some of the composition ranges given in 1.1 are too broad to be covered by a single test method and therefore this standard contains multiple test methods for some elements. The user must select the proper test method by matching the information given in the Scope and Interference sections of each method with the composition of the alloy to be analyzed.
1.5 The values stated in SI units are to be regarded as standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 6 and in special “Warning” paragraphs throughout these test methods.
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